ISD14B20
5.1.2. Edge-triggered Playback (PlayE ) Operation
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•
Low active input, edge-trigger, toggle on-off, debounce required.
Playback begins from the start address to end address or EOM, whichever is occurred first.
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•
At the end of message, LED pulses Low momentarily.
Then device will automatically power down.
During playback, a subsequent trigger terminates the playback operation. If EOM marker is not encountered,
then LED will not pulses Low momentarily.
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•
This pin has an internal pull-up device.
Once PlayE is active, input on PlayL , REC , FT , NORM / MODE , S0 , S1 , S2 , S3 , E0 , E1, E2
or E3 is banned.
Fig. 4 : Playback–Edge (PlayE ) function
Norm/Mode
<S3:S0>
<E3:E0>
TAHold
Start
TASet
Stop
TAHold
Start
TASet
PlayE
LED
TEOM
TDeb
TDeb
TSettle2
TDeb
End of
Message
Sp+
Sp-
5.1.3. Level- triggered Playback (PlayL )Operation
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•
Low active input, Level-hold, debounce required.
Once active, playback begins from the start address and stops whenever PlayL returns to High. When
an EOM is encountered, LED pulses Low momentarily.
Then device will automatically power down.
This pin has an internal pull-up device.
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•
•
Once PlayL is active, input on PlayE , REC , FT , NORM / MODE , S0 , S1 , S2 , S3 , E0 , E1, E2
or E3 is prohibited.
Fig. 5: Playback–Level (PlayL ) function
Publication Release Date: October 9, 2007
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Revision 0
WINBOND [ WINBOND ]
